1adw
From Proteopedia
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PSEUDOAZURIN
Overview
The structure of pseudoazurin from Thiosphaera pantotropha has been determined and compared to structures of both soluble and membrane-bound periplasmic redox proteins. The results show a matching set of unipolar, but promiscuous, docking motifs based on a positive hydrophobic surface patch on the electron shuttle proteins pseudoazurin and cytochrome c550 and a negative hydrophobic patch on the surface of their known redox partners. The observed electrostatic handedness is argued to be associated with the charge-asymmetry of the membrane-bound components of the redox chain due to von Heijne's 'positives-inside' principle. We propose a 'positives-in-between' rule for electron shuttle proteins, and expect a negative hydrophobic patch to be present on both the highest and lowest redox potential species in a series of electron carriers.
About this Structure
1ADW is a Single protein structure of sequence from Paracoccus pantotrophus with as ligand. Known structural/functional Sites: and . Full crystallographic information is available from OCA.
Reference
Pseudospecific docking surfaces on electron transfer proteins as illustrated by pseudoazurin, cytochrome c550 and cytochrome cd1 nitrite reductase., Williams PA, Fulop V, Leung YC, Chan C, Moir JW, Howlett G, Ferguson SJ, Radford SE, Hajdu J, Nat Struct Biol. 1995 Nov;2(11):975-82. PMID:7583671
Page seeded by OCA on Thu Feb 21 11:43:28 2008
